android - 按下后设置密码

Question

我关注了this提示密码警告

所以我把这个给了 back pressed 但它不起作用

 @Override
public void onBackPressed() {
 showDialog();
}

但它不工作 onBackPressed 它正在返回或退出应用程序...

how ever its works fine with onBackPressed alert

@Override
public void onBackPressed() {
    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
    alertDialogBuilder.setTitle("Do You Want to Exit ?");
    alertDialogBuilder
            .setMessage("Click Yes to Exit!")
            .setCancelable(false)
            .setPositiveButton("Yes",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int id) {
                            moveTaskToBack(true);
                            android.os.Process.killProcess(android.os.Process.myPid());
                            System.exit(0);
                        }
                    })

            .setNegativeButton("No", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    dialog.cancel();
                }
            });
    AlertDialog alertDialog = alertDialogBuilder.create();
    alertDialog.show();
}

But I want Prompt Password onBackPressed

任何人都可以帮助我 onBackPressed 密码有什么问题吗？

Answer 1

嗨，试过一次，它对我来说效果很好......

直接提示而不是布局

@Override
public void onBackPressed() {

    AlertDialog.Builder alert = new AlertDialog.Builder(this);
    alert.setTitle("Title");
    alert.setMessage("Message");

    final EditText input = new EditText(this);
    alert.setView(input);

    alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            String value = input.getText().toString();
            // Do something with value!


            /** CHECK FOR USER'S INPUT **/
            if (value.equals("oeg"))
            {
                                /*Log.d(input, "HELLO THIS IS THE MESSAGE CAUGHT :)");
                                Search_Tips(input);*/
                finish();

            }
            else{
                //Log.d(input,"string is empty");
                String message = "The password you have entered is incorrect." + " \n \n" + "Please try again!";
                AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
                builder.setTitle("Error");
                builder.setMessage(message);
                builder.setPositiveButton("Cancel", null);
                /*builder.setNegativeButton("Retry", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int id) {
                        //showDialog();
                    }
                });*/
                builder.create().show();

            }
        }
    });

    alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            // Canceled.
        }
    });

    alert.show();

}